There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section. Before you post please read this
dpar: You probably already checked it, but what is the refresh set to in preferences? Also I'm sure you know that the update panel nor the package manager can be open. Perhaps some more data will be needed to understand the problem.